Discussion and picture thread of the testing of various brands of 13mm sockets to determine their contact areas and how much they mar the fastener surface, if any. Extensive socket variety came from contributions by forum members.

How to service a spiral-ratchet screwdriver. Details on the tools and materials needed, explosion of parts, bit, spring and handle removal, removing the sleeve and the sleeve screw, cleaning and greasing, reassembly, testing and painting.